R-143a PT Chart
A2L GWP 4470Pure refrigerant (1,1,1-Trifluoroethane). HFC.
Boiling Point
-53°F
-47.2°C
Critical Temp
162.9°F
72.7°C
Critical Pressure
545.6 psia
37.62 bar
R-143a Pressure-Temperature Graph
R-143a Saturation Pressure Table
Blue values indicate vacuum (below atmospheric pressure).
| °F | °C | PSIG | PSIA | kPa | bar |
|---|---|---|---|---|---|
| -80 | -62.2 | -7.9 | 6.81 | 47.0 | 0.47 |
| -75 | -59.4 | -6.8 | 7.93 | 54.7 | 0.547 |
| -70 | -56.7 | -5.5 | 9.19 | 63.4 | 0.634 |
| -65 | -53.9 | -4.1 | 10.61 | 73.1 | 0.731 |
| -60 | -51.1 | -2.5 | 12.19 | 84.0 | 0.84 |
| -55 | -48.3 | -0.7 | 13.95 | 96.2 | 0.962 |
| -50 | -45.6 | 1.2 | 15.91 | 109.7 | 1.097 |
| -45 | -42.8 | 3.4 | 18.07 | 124.6 | 1.246 |
| -40 | -40.0 | 5.8 | 20.46 | 141.1 | 1.411 |
| -35 | -37.2 | 8.4 | 23.09 | 159.2 | 1.592 |
| -30 | -34.4 | 11.3 | 25.98 | 179.1 | 1.791 |
| -25 | -31.7 | 14.4 | 29.14 | 200.9 | 2.009 |
| -20 | -28.9 | 17.9 | 32.58 | 224.6 | 2.246 |
| -15 | -26.1 | 21.6 | 36.33 | 250.5 | 2.505 |
| -10 | -23.3 | 25.7 | 40.4 | 278.6 | 2.786 |
| -5 | -20.6 | 30.1 | 44.81 | 309.0 | 3.09 |
| 0 | -17.8 | 34.9 | 49.58 | 341.9 | 3.419 |
| 5 | -15.0 | 40.0 | 54.73 | 377.4 | 3.774 |
| 10 | -12.2 | 45.6 | 60.28 | 415.6 | 4.156 |
| 15 | -9.4 | 51.5 | 66.24 | 456.7 | 4.567 |
| 20 | -6.7 | 57.9 | 72.63 | 500.8 | 5.008 |
| 25 | -3.9 | 64.8 | 79.48 | 548.0 | 5.48 |
| 30 | -1.1 | 72.1 | 86.81 | 598.5 | 5.985 |
| 35 | 1.7 | 79.9 | 94.63 | 652.5 | 6.525 |
| 40 | 4.4 | 88.3 | 102.97 | 710.0 | 7.1 |
| 45 | 7.2 | 97.2 | 111.85 | 771.2 | 7.712 |
| 50 | 10.0 | 106.6 | 121.29 | 836.3 | 8.363 |
| 55 | 12.8 | 116.6 | 131.32 | 905.4 | 9.054 |
| 60 | 15.6 | 127.3 | 141.95 | 978.7 | 9.787 |
| 65 | 18.3 | 138.5 | 153.22 | 1056.4 | 10.564 |
| 70 | 21.1 | 150.4 | 165.14 | 1138.6 | 11.386 |
| 75 | 23.9 | 163.0 | 177.74 | 1225.5 | 12.255 |
| 80 | 26.7 | 176.3 | 191.05 | 1317.2 | 13.172 |
| 85 | 29.4 | 190.4 | 205.09 | 1414.0 | 14.14 |
| 90 | 32.2 | 205.2 | 219.89 | 1516.1 | 15.161 |
| 95 | 35.0 | 220.8 | 235.48 | 1623.6 | 16.236 |
| 100 | 37.8 | 237.2 | 251.89 | 1736.7 | 17.367 |
| 105 | 40.6 | 254.4 | 269.15 | 1855.7 | 18.557 |
| 110 | 43.3 | 272.6 | 287.29 | 1980.8 | 19.808 |
| 115 | 46.1 | 291.7 | 306.35 | 2112.2 | 21.122 |
| 120 | 48.9 | 311.7 | 326.37 | 2250.2 | 22.502 |
| 125 | 51.7 | 332.7 | 347.38 | 2395.1 | 23.951 |
| 130 | 54.4 | 354.7 | 369.44 | 2547.2 | 25.472 |
| 135 | 57.2 | 377.9 | 392.6 | 2706.9 | 27.069 |
| 140 | 60.0 | 402.2 | 416.9 | 2874.4 | 28.744 |
| 145 | 62.8 | 427.7 | 442.43 | 3050.4 | 30.504 |
| 150 | 65.6 | 454.6 | 469.27 | 3235.5 | 32.355 |
| 155 | 68.3 | 482.8 | 497.54 | 3430.4 | 34.304 |
Properties
| ASHRAE Designation | 143a |
| Safety Classification | A2L (mildly flammable) |
| GWP (AR5) | 4470 |
| ODP | 0 |
| Molecular Weight | 84.04 g/mol |
| Boiling Point (1 atm) | -53°F / -47.2°C |
| Critical Temperature | 162.9°F / 72.7°C |
| Critical Pressure | 545.6 psia / 37.62 bar |
| Category | HFC |
Common Applications
- Component of R-404A and R-507A blends